Question for women singular?

This is kinda TMI but I really am curious.
I started my period end monday and it was over on friday. My husband and I have sex that night and the subsequent morning when I got up, I be spotting brown and have be since. Could I be pregnant that quick? We are trying, and I thought I be cause I be 3 days late, but I tested and it be negative and get my period the subsequent day. So with the sole purpose real answers please, no BS.
Answers:

Progesterone Challenge poor? Provera didn't work?

It sounds to me like the brown spotting is still your extent, I get that from time to time.completely usual! If you just have sex Friday night and Saturday morning you would not be pregnant already, implantation does not come to pass immediately after intercourse. If you don't chart your basel body heat try going to a website where it can estimate when you will ovulate and own sex around that time as much as possible. A good site is www.mymonthlycycle.com. You can create a free details where you input when your term starts and ends and it tells you your most fertile days, etc. That tool might serve you while trying to conceive. Good luck!

How long after a ceserean are you supose to hurt in your abdominal area?

it could be your length still, i have have that where the later few days will be very buoyant and just be brown spotting
angelic luck conceiving!

Why wont she talk?

all of your extent fluid doesnt all come out. Some stays inside you. So when you have sex and put pressure on ur uterus, it forces the left overs out. it is brown because when blood get old, it turns brown.

Period come after 2 weeks of waiting?

that would be call dried up blood that didn't concrete your sight until it be a different color its normal. it singular happened because u have sex or u were just about to go rotten of your cycle at that moment, your not pregnant tho